Assertion : $[T i (H_{2} O)_{6})] C l_{3}$ on heating becomes colourless Reason: Water is removed on heating $[T i (H_{2} O)_{6})] C l_{3}$

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$[T i (H_{2} O)_{6}] C l_{3}$ on heating gives colourless compound because
1. The colour is due to the transition of $e^{-}$ from $t_{2 g}$ to $e_{g}$ the d-orbital splitting takes place when the ligands are there heating removes the water molecules from the co-ordination sphere. As a result here is no crystal field spliting hence no coour is observed.

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